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2017-02-23 11-12-25
Eric Halim
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Solved
Why OS field numeric we can input character 'e'
Question

That happens when you have numerical type input. You can type 'e' character but never stored back so it's safe but it's annoying.

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13 Jul 2018
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2026-06-05 12-38-17
Eduardo Jauch
Solution

Hi Halim,

Because 'e' is a valid number character. 

This is the HTML specification:

A floating-point number consists of the following parts, in exactly the following order:

  1. Optionally, the first character may be a "-" character.
  2. One or more characters in the range "0—9".
  3. Optionally, the following parts, in exactly the following order:
    1. a "." character
    2. one or more characters in the range "0—9"
  4. Optionally, the following parts, in exactly the following order:
    1. a "e" character or "E" character
    2. optionally, a "-" character or "+" character
    3. One or more characters in the range "0—9".
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13 Jul 2018
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2017-02-23 11-12-25
Eric Halim

So why we can't save it anyway if it is allowed?

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13 Jul 2018
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2026-06-05 12-38-17
Eduardo Jauch

Possibly because you are not using it correctly.

'e' is the exponential symbol. So, to it to be valid, you must use it like this:

2e5 or 10e-3

if it is not followed by the exponential value, it is not valid. And probably must be also preceded by something.

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13 Jul 2018
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2017-02-23 11-12-25
Eric Halim

I see thanks

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13 Jul 2018
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2026-07-28 08-35-54
Nhorwin John Villano

Hi,

Is it possible to disable the input widget to accept 'e' so that it can only accept numerical values like (0-9)?

Thanks

Regards,

Nhorwin

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28 Nov 2018
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2021-10-25 07-22-03
Flávio Saraiva

Nhorwin John Villano wrote:

Hi,

Is it possible to disable the input widget to accept 'e' so that it can only accept numerical values like (0-9)?

Thanks

Regards,

Nhorwin

Nhorwin John Villano have you find a solution?


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02 Oct 2019
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Pedro Ricarte

Replying to Flávio Saraiva's comment on 02 Oct 2019 18:02:47

I am not...

I have an input widget where's my data type is number, but i only want the 0 to 9 digits, and avoid the user to put the "e" and the "-" (negative) char. How can I do?

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26 May 2022
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